| The dynamic compaction method has been widely applied in soft ground treatment in highway constructions but there are no universally applicable theory for studies on it and accurate designation for it. Thus in this paper, combined with practice, the working mechanism, design method and quality control of the dynamic compaction method was studied. On the basis of study on the theory of dynamic compaction, the specific property of soil and the working mechanism of dynamic compaction was studied and also studied was the dynamic compaction method design and the construction technology. Chiefly studied are design principle, computation theory and influence factor etc and studied in detail were the design parameters and construction technology; The on-the-spot test and the quality checking method were introduced; By analyzing the influence factors of reinforced depth and on the basis of dimension comparison, the reinforced depth is calculated by applying the square of the energy on the bottom of the hammer and also, the energy could be decided by the required reinforced depth and the weight of the hammer; On the basis of the diagram of the dynamic compaction method, the method for computing the reinforced range, which is suit for unitary soil layer, is deduced. By combining neural network with the requirement for stopping compaction, the deformation module is calculated, based on which, the capability of the soil after compaction is calculated as the reference for design and construction; With the influence during compaction procedure on the environment studied, the vibration principle is analyzed to work out the safety distance in construction and rational vibration resistance measures.
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